Problems, inputs, outputs and official solutions

		In & Out	PDF	Solutions
	Accident	accident-in-out.zip	accident.pdf	accident-solutions.zip
	Birthday	birthday-in-out.zip	birthday.pdf	birthday-solutions.zip
	Cables	cables-in-out.zip	cables.pdf	cables-solutions.zip
	Housing	housing-in-out.zip	housing.pdf	housing-solutions.zip
	Lanterns	lanterns-in-out.zip	lanterns.pdf	lanterns-solutions.zip
	Milky way	milkyway-in-out.zip	milkyway.pdf	milkyway-solutions.zip
	Nightmare	nightmare-in-out.zip	nightmare.pdf	nightmare-solutions.zip
	Park	park-in-out.zip	park.pdf	park-solutions.zip
	Rope	rope-in-out.zip	rope.pdf	rope-solutions.zip
	Shopping	shopping-in-out.zip	shopping.pdf	shopping-solutions.zip
	Trains	trains-in-out.zip	trains.pdf	trains-solutions.zip
	Vampires	vampires-in-out.zip	vampires.pdf	vampires-solutions.zip
Introduction + all problems				Presentation of solutions